LDTM-028K datasheet(3/5 Pages) ETC2

Part #	LDTM-028K

Description	LDT with Crimps Vibration Sensor/Switch

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Manufacturer	ETC2 [List of Unclassifed Manufacturers]

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LDT with Crimps Vibration Sensor/Switch

LDT0-028K Piezo Vibration Rev 1

www.meas-spec.com

10/13/2008

3 of 4

examples of Properties (continued)

TABLE 2: LDT0 as Flexible Switch (see Fig 2)

Tip Deflection

Charge Output

o/c Voltage Output

2 mm

3.4 nC

7 V

5 mm

7.2 nC

15 V

10 mm

10 - 12 nC

20 - 25 V

max (90Ε)

> 30 nC

> 70 V

Experiment #3

LDT0 Electrical Frequency Response -

when the source capacitance of around 480 pF is

connected to a resistive input load, a high-pass

filter characteristic results. Using an electronic

noise source to generate broad-band signals, the

effect of various load resistances was measured

and the -3 dB point of the R-C filter determined

(see Table 3, Fig. 3).

TABLE 3: LDT0 Electrical Frequency Response

(see Fig 3)

(480 pF source capacitance)

Load Resistance

-3 db Frequency

1 Megohm

330 Hz

10 Megohm

33 Hz

100 Megohm

3.3 Hz

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